Cookie Baking and Parchment Paper Hate

It's time to bake cookies. I seem to recall this topic coming up in years past, but WHY oh WHY do I find industrial 15 inch wide parchment paper in my grocery store! I like baking cookies on parchment, but the home cook's sheets are 17 inches long by 11 inches wide. Cutting the parchment to fit is a pain in the buttocks. Must I invest in silpat? Why doesn't the manufacturer know this? Plus it curls up while you are trying to cut it. Need I go on? Grrr.